Tbansmission band



Jan. 29, 1924. 1,481,968

G. A. MGDERMOTT TRANSMISSION BAND, FULLER, AND HOLDER THEREFOR Filed July 114 1922 4 Sheets-Sheet 1 ATTORNEY Jan. 29, 1924 1,481,968

G. A. MCDERMOTT TRANSMISSION BAND, FULLER, AND HOLDER THEREFOR FileduJuly 11. 1922 4 Sheets-Sheet 2 lNVENTOR i AW WITNE:

Jan. 29 1924.

Filed July 11 1922 G A M DERMOTT TRANSMISSION BAND, FULLER, AND HOLDER THEREFOR Jan. 29

G. A. M DERMOTT TRANSMISSION BAND, FULLER, AND HOLDER THEREFOR Filed July ll. 1922 4 Sheets-She et aj/wwawww WITNES:

V tachable ea;

Patented Jan. 29, 1924.

f T-Fh Tfss; PATENT worries; t I. r A m fi' ll'. or an ze nzneo, censorin v I A r: I 5e39, iEIe fionnnn rnnnnro 'o allwiwyhitm com-emi 1 Be it 'kn own that I, GARI' mr'A. MODER- Morrr, a bitizen vof the United Stutes,.residin at an Diego, in thflcounty of Sen 5 Diego and State of Californimhaveinvente ed new and useful-Improvements in Transmission Bends, Pullers, and. elders Therefor, of fthefollowingis' tion. 37 g s i e i n; r lat s e i'tt e i n bandsfor useen augbmqbue ha has for its object'thegir'ovisionbf 'itrensmissiqn bend having 'e hwilee w em y hel may he plac d r 'lembv difiem fm c i g l5 relation to' its drum" without necessitating removal of =;the}='trensn ission. cover, the ,device having; I several ho'u sftime' inthe operation otteeral patented: h I

both ears, detachable f and (others I of which have onjear .det'echeble. h band of W 1% mesq ite 11115 *1 d edenii' 1 1 m de throjtions fittih" with'n oneg'ol' m re, holes ormed in the bend: device is thht, in order; gage the ear the band and sprung apart which is"diflijcul slpacem whichzthe workis to be done Eur t ermore,'this -t peof bandhasto forced down on the l e hand side qf'the transmie sion in order thet thefend-hfl-Y ng the d 5 tachable car may, comeiiround on the right to engege or disenear must be hand side where there is rnorje; space to place:

the ear inv gpofsition' "Urine/ putting in and pulling out of-thefbends froni jthe ,leit side: which- 40 simple as the turn isiveryjsharp. Ifthe bands .erejfforced .ero'und from the right hand side yvherethe jtui'i lisjn'ot so sharp, then the eh}: Cannot be, placed jinlposition as there is 4 of the trit lijsii tlgn iIt is ith 0 that?v the presentiuhvelntion signed which contemp 0 vision at i fietechabefeer which hms ejhole slots engageebleu jonheiidedifusteners projecting from the bend 'iyherebyfthe above mentioned; objectionable .-,ispri ng1tig} ection will be unnepesserfyf an ndditional feature of m invention' ,bei ngthe" 'rbi 'isionyoig'e lock disposable within one o the keyhole slots of the trens'rhissifonybendsthe bands cutoff Figure 1 is time in view rn u ihni'hleu m 11, mm. mm in. 574,185.

" 1 which hold the distinct eventies: 1n ,savin'gt;

I, W M, A while I a w t e h ree i e ne er' ends, some of which have veujkebwni.

heobjection tojthie t] in the mall is; iatesiili detaiil the tor subsequent to thcengagement of the latterupon the headed fastener or stud so that ion itudinal or circumferential displacement oft e ear with respect to the band will be prevented. 1

Another, and a ver important, ob'ect is theprovislon of a pu ler adapted to e engaged upon one of the driving plate screws with a. hook at the end of the band whereby when a rear wheel of the automobile 1s jacked u and turned to turn the drums the band wilYbe drawn around into properposi tiqn after which the puller is of course re- 7 moved. 1 Another object is the provision of a holding, device en ageable with lugs formed on the ears wheriiiv to hold the band contracted (proper adjustment of the pedal shafts isms e. Y

Another object is the provision'of a de tachable notch memberassociated with the low'speedshaft whereby this member may removed to rmit removal of the low H8 T shaft so tlizt the same will not be in e way when putting in a new band on the -low speed drum. I it I An additional ob'ect is the provision of v band apparatus oft is character which will besim'pl ef and inexpensive in construction, gets; to use, a great tiine and labor saver,

: an a general improvement in the art.

; With the above and other objects and lid' vantages in view, the invention'consists in 99 i the details of construction to be hereinafter more fully described andclaimed and illus trated in the accompanying drawingsiin an edge elevation-of my improved band, i Fi re 2 is a plan view of the end having the I gtachable ear and showing the ear locked in place.

Figure 3' is a longitudinul'sectional vie through this end, e I, f Figure 4 is across sectional view on the line 4 4 of Figure2, of thisend I Figure 5 IS a perspective view' of the band with theear removed,

Figure 6 is in perspective view of the ear Figure 7 z is a perspective view of the lock ingunemben detached, theheok members detached, i I p t Figure 9 is a perspective view of the puller,

brake drum and engageable 65 j Figure 8 zs'ai perspective view of one of plate,

, Figure 10 is a cross sectional view through the transmission of an automobile showing the band in initial position and engaged by the puller, with the low speed shaft remove Figure 11 is a similar view showing the. parts moved with the band in proper position and showing the low speed shaft in position, i

- Figure 12 is a cross sectional view through a portion of the transmission cover, showing in section the detachable notched member for the low speed shaft, 4

Figure 13 is a plan view of the low speed shaft and adjacent parts with the detachable member in locked position.

Figure 14 is 'a cross sectional view through the detachable notched member,

Figure 15 is a' perspective view of the notched member removed,

Figure 16 is a fragmentary the transmission with a ban tracted by mycholder,

Figure 17 is a detail perspective view of the holder alone,

Figure 18 is a. perspective view of another pulling tool used.

Referring more particularly to the drawings,the letter A designates the transmission case of an automobile, B designates the transmission cover having the small door opening 0. D desi nates the lower speed drum, E the low shaft, F the brake drum, G the driving and H one of the driving late screws. As is well known in the art, the "nuns above mentioned as well as the reverse drum, are encircled y contractile steel spring bands lined with brake fabric andprovided at their ends with ears by means of which thebands may "be contracted to make the various drums perform their functions. In the standard equipment of an automobile having this transmission, the ears are rigid with respect. to the bands and ordinarily the low speed shaft E carries a notch member rigidly secured thereto.

plan view of In carrying out my invention I, make use' of a spring steel band 20 which has secured upon one end an ear 21 of the s'ame' type as is ordinarily provided. e otheniendoi the band carries a air of spacell headed studs 22 and is provi at. its end with a. rojection Associated with-this secon mentioned end of'the band is a detachable ear 24 oh the same shape as is ordinaril provided but having its base portion 25 ornied with key hole slots 26 engageable upon the studs 22 whereby the ear maybe easil nttached or detached. At its forked out the ear 24 is formed with a recess 27 engaging the projection 23 for relieving the strain upon the studs when the band is contracted by pressure upon the associated foot pedal.

In order to lock the our 24 against fissible movement circumferent ally oi the nd,

band may held -con "plates 33 riveted in rum band contracting,

removable ear in I provide a filler block 28 insertable within the key-hole slot 26 nearest the forked end of the ear and this filler block fits eonformingly within this slot and has a ooncaved end 29 engaging the associated stud. Pivoted 10 upon the top of the base." ition- 25 immediately ad acent the forke rtion ofthe ear is a. retainin catbh whi has a down 7 turned end 31 ttin withina de .ressi'on 32 in the filler block. on this fil er in I sition and engagedby the catch 80 it wil be apparentthat movement of the ear awa from the end of the band will be positive y prevented; V

It. is ap rent that the above described so used in exactl the same inanner. as any other band having a single detachable ear but it will be noted that owing.

to the fact that the projections or studs are carried by the band, instead of the ear :md at that the ear is provided with theslotsengaging thestuds, that no'sprin ing action is necessary suc as is describet in' the I preliminary remarks".

As stated in said remarks there is more-or no less difiiculty in inserting any band through the door opening at the-top of the transmission cover. To render thisoperationmore simple I provide the-ends of the band with lace and formed with be oolrs 34 projecting yondthe ends of the band. I also make use of the ullin device which -comprises a member orm as an arcuate body 35 having a slot 36 e able upon one of the driving plat'qfiscrews after the latter has of course been loosened and secured with respect tothe driving late b subsequent tightening of the screw. ormed on this member 35 is an extension or arm 36 overlying the brake drum, F and carrying pivotally mounted loops 37.-

In the operation of placing the band 'in position the end from which the removable ear has been detached is inserted at the ri ht hand side of the transmission that is Ina-"11o tween the periphery of the bra'lre drum 9. d the cover. -The puller havin been placed in position upon the driving p ate, as above described, oneof the loops 37 thereon is enwith a hook 34. at this-endof the neml. The operator then jacks up one re r wheel of the automo ile and turns the wheel in the proper directionto rotatethe trans-a mission drums in a clockwise'direction whet-m, upon the rotation of the driving 'platedan 12c rylng the puller will cause the bandto be. drawn partly around its drum. When the drum is turned to the right as far as it will go there is not room enough to place the ing of the dal s aft. As acon uence t he band is, un ooked at the left han side and I en thereon the handle member shown in igure 18 and then pu l, tharhand back toward the rear of the carwhile' at the samewe lockis it ition owing to the beartime keeping a strainuponit. Each successive band is of course ulled back a 1cm distance. When both en s are at the top in proper osition the pedal shaft is an aged with the xed'ear 21. 24 is then eng d with the band, after which the adjustm nut on'the pedal shaft is roperly adjuste his adjustment of the pedal shaft, re-

gardless of whether it be the one associated with the brake, low speed, or reverse pedal, is greatly simplified by the use of the holding member shown in Figures 16 and 17. This member comprises an elongated strip 38 of sheet metal formed at its end portions with slots 39 engageable over upstanding lugs 40 carried by both the ears 21 and 24. These lugs 40 have reduced necks 41 and the outer ends of the slats 39 are constricted, as shown at 42, for enga ement with these necks so that when the and has been contracted to its maximum extent and theholding strip engaged upon them and then the hand is permitted to expand until the lugs 40 are engaged within the outermost en s 42 of the slots, accidental displacement of the holding strip will be ositively revented. After this strip hasiieen place in position and the necessary adjustment of the nut of the associated shaft has been made, the associated pedal is pressed to again contract the band so that the holding strip 38 maiy be removed.

t. is well known that replacing the low speed band is difiicult owing to the front construction of the low speed shaft which cannot be removed, the brake and reverse shafts being of course easily removable. Or dinarily there is a notch member which is rigidly secured on the low speed shaft by a transverse rivet In order to obviate this objection I remove the ordinary notch member and replace it with a detachable notch member 43 which is provided with diametrically rounded threaded holes 44 which are brought into registration with the usual hole in the low speed shaft. A screw 45 is passed through registering holes and screwed home and turned into such position that the slot therein will be parallel with the axis of the shaft. To prevent accidental working out of this screw I provide a leaf spring 46 pivoted upon the member 43 and having at its end portion a down-turned flange or lip 47 engaging within the slot of the screw.

When it is desired to replace the low speed band the adjusting nut are of course removed or loosened, the spring 46 is dis engaged from the screw 45 and the latter is then removed, whereupon the low speed shaft may be withdrawn in exactly the same manner as the brake and reverse shafts. After the band is replaced this notch member 43 must of course be placed back in po- The detachab e ear sition with the screw 45 passing through the shaft and with the spring 46 engaging the screw.

It is well known that it is dangerous to use small articles around the transmission for fear of dropping them into the transmission which might result in necessitating removal of the entire motor. It is therefore advisable that the retaining member 38 and the filler block 28 be provided with holes 48 through which pieces of string may be tied so that they may be recovered if dropped. Anv of the other parts may also be so equi ped if found advisable. From t e foregoing description and a study of the drawings it will be apparent that I have thus provided an improved transmission band and means for placing and holding the same in position upon the transmission drums without in any way necessitating removal of the transmission cover, all parts of m invention being simple and inexpensi e an their usein combination effecting a manifest saving in time and labor in the installation of such bands.

While I have shown and described the referred embodiment of m invention, it 15 of course to be underst that I reserve the right to make such changes in the form, construction, and arrangement of parts as will not de art from the spirit of the invention or tlie'scope of the subjoined claims- Having thus described my invention, I claim:

1. A transmission band provided at one end with a rigid ear and carrying at its other end spaced headed studs, a detachable ear associated with said second mentioned end and having a base portion formed with key-hole slots engaging upon said headed studs, a. filler block dis sable within one of said key-hole slots su equent to the engagement of the slots upon said studs, and poems for locking said filler block in posiion.

2. A transmission band provided at one end with a rigid ear and carrying at its other end spaced headed studs, a detachable ear associated with said second mentioned and and having a base portion formed with key-hole slots engaging upon said headed studs, a filler block d1 sable within one of said key-hole slots so equent to the engagement of the slots upon said studs, and means for looking said filler block in position comprising a spring catch pivoted upon said base portion and having a down turned hp at its free end, the tiller block being provided with a recess receiving said lip.

3. A transmission band havin one and provided with a rigid ear and having its other end provided with a detachable ear, hooks extending from the ends of the band, in combination with a puller formed as a body adapted to be secured upon a portion of the planetary transmission of an automobile, and means carried by said puller and engageable with either of said hooks wheremission. 7

' 4. In.-a planetary transmission for autmobiles including a series of drums and a driving plate bolted to one endmost dmm.

' a. transmission band provided at one end with a rigid ear and having at its ofll'er end a. detachable ear, hook plates secured upon the band and extending beyond the ends thereof, in combination with a puller formed by the band may be moved about the transdrums and driving plate the band will be movedinto or out 0 encircling relation to said endmoSt drum.

5.' A transmission band provided at its ends with ears, an upstanding lug formed on each ear and having a constricted neck portion, and means for holding the band contracted comprising an elon ated strip slotted for engagement upon said lugs.

6. A transmission band provided at its ends with ears, an upstanding lug formed on each ear and having a constricted end portion, and means for holding the band contracted comprising an elongated strip slotted for engagement upon said lugs, theouter ends of the slot being constricted for engagement with the constricted portions of said'lugs.

In testimony whereof I aflix m si nature.

GARRETT A. MoDElt OTT. 

